Patents by Inventor Chang-Ning Hong

Chang-Ning Hong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20040125977
    Abstract: A headphone with an automatic reeling device for a jack wire has a headband with two earphones, a reeling device installed inside one of the two earphones and a jack wire. The reeling device has a stationary disk, a rotating disk with a wire reel rotatably abutting the stationary disk, a coil spring mounted between the stationary disk and the rotating disk and a push button detachable engaging the rotating disk. The jack wire is wound around the wire reel on the rotating disk. By pressing the push button, the rotating disk is released, and the coil spring provides a restitution force to rotate the rotating disk and retract the jack wire into the earphone.
    Type: Application
    Filed: December 15, 2003
    Publication date: July 1, 2004
    Inventors: Chang-Ning Hong, Qui-Ching Hou